Pasteurizing apparatus.



w. H. PARK. PASTEURIZING APPARATUS,

APPLIOATION FILED JULY 6, i910.

Patented May 27, 1913.

b m ezw 75M UNITED STATES wmnmu n. PARK, or new YORK, n; Y,

resrnunazme imam-1s.

messes.

Specincation of Letters Patent. Application filed July e, ieio. serialno. 570,688.

To all whom it may concern:

. Be it known that 1, WILLIAM PARK, a citizen of. the United States, anda resident of the borou h of Manhattan, in the county of New Yor cityand State of New York, have invented certain new and useful Improvementsin Pasteurizing Apparatus, of which the following is a specification.

The invention relates to apparatus designed to be used in theasteuriz'a-tion of milkor other liquids, and its objects are to' providea safe, reliable and eiiective appa ratus of this character of simple,inexpensive and durable construction,- the parts of which ma be easilyconstructed and which may be e ectively' and reliably operated bypersons of ordinary intelligence, and without the necessity for constantcare aldat j tention. I

To these ends the invention consists in the construction, combinationand arrangement of parts hereinafter described and claimed" andillustrated in the accompanying drawtion of the'apparat-us isimmediately below ings. I

In the said drawings Figure Tie a vertical cross-section of an apparatusembodying the improvements. Fig. 2 is a horizontal crosssection on theline 2-2 of Fig. 1 looking in the direction indicated by the arrow. Fig.3 is a view similar to Fig. 1 of a modified form.

The apparatus is primarily designed to be used in connection with thepasteurization of milk-although itmay be used for the similar treatmentof other 1iquids-'and will be described with reference to its saidprimilk after being raised to the desired temperature is permitted toremain at that temperature for the required length of time and preventedfrom being withdrawn for use before that period has elapsed; It is forthe purpose of insuring the proper performance of these requirementsautomatically and Without the possibility of accidental or intentionalinterference therewith that the apthis application is principallydesigned,

In the apparatus illustrated in the drawings, the milk, after beingheated to thedesired temperature, is caused to pass into the cylindricalholder A through the pipe .J which enters through the wall of the holderbelow the cover A and has its discharge end connected with the pan G bymeans of a collar G in' the side of said pan which receives it. Theprincipal object oi having the milk received by the pan G on enteringthe holder is to prevent an oversupply and to avoid undue pressureonthespreader by the entering stream. The pan may be observed by removing'thecover, or the cover may be made of transparent material, or entirelyoniitted'in orderthat the depth of the milk therein may be ascerthe saidtube, since the level of milk in the holder must be such as to raise itto this point before there can be any discharge.

Vhen the holder is first filled the float rises froni the bottom as thelevel of liquid rises, and in this operation the annular flange Kconcentrically arranged with respect to the float on the upper surfaceof said float receives the milk discharged from the tube G and checksits tendency to splash against the sides of the holder by causing a poolto be formed. Small openings K are located at intervals along the loweredge of the flange K for the purpose of permitting all of the liquidtherein to flow out;

Patented May 2*:31913.-

*paratus which forms the subject matter The float is provided with aplurality of I spacers D extending radially therefrom and preferablylocated 90 degrees apart, so as to space the said float from the wallsof the holder and maintain, its; position in the center thereof. Anannular horizontal flange or rim C is also provided at the outer edge ofthe upper surface of the float, and eX-.

and.

by which it will be caused to enter the bodyof milk in a thin, slowlyflowing body. It will be observed that this flange C is so formed andplaced as to be normally slightly submerged, and the object of thisprovision is to still further check the outward flow of the milk beforeit reaches thc liquid body in the holder. By these means the milk isreceived and caused tospr'ead out gently upon the upper surface of theliquid body in the holder, without receiving any 1naterial verticalmovement either through its initial movement on entering the holder orthrough contact with the walls or other parts thereof. The result isthat the milk entering the holder remains on the topof the liquid bodyand as it cools, and its specific gravity thereby increased, settlesvariation in the specific gravity of the liquid due to slightdiiierences in temperature is utilizedto secure the gradual passage ofeach drop tlnrough the holder, and that in the apparatus this action isinaugurated by the deposition of the freshly heated milk in such amanner that because of its inferior specific gravity it will spread outover the top of the liquid body.

The supply pipe J is provided with a valve J by which the flowv of milkto the holder may be regulated so as to provide for the Filing andemptying thereof at a rate that will insure proper pasteurization. Bymaking the depending outlet tube of the receptacle G of the proper sizeand capacity, however, this result may be accomplished without the useof a valve, and in this case a more rapidiiow of milk than is desiredcannot be caused.

in the construction shown in Fig. 1, ,th outlet is through the pipe llleading from the bottom of the holder to a point near the top thereof,and provided with a branch pipe ll extending through the wall of theholder and adapted to be, used for the filling of any suitablereceptacle. In order that all siphoning action of this pipe may beavoided, its upper end extends above the outlet level and is open. Itwill be seen that when the liquid rises to the' level of the branch pipeII, it will begin to flow out from the bottom of the holder through thispipe and will continue to flow out as long as milk is supplied to theholder. When the' supply be provided with a sight glass E 'in-order thatthe operator or inspector, under whose supervision the pasteurizationiscarried on, may be sure that no milk is being discharged through thispipe during the normal operation of the apparatus. The pipe 15] isrovided with a joint secured by a collar E and the pipe H with a similarcollar-so cured joint H in order that they maybe removed 't'or thoroughcleansing and for transportation purposes.

The receptacle G is positioned and. supported upon a cross-piece Lsecured to the walls of the holder and extending diametrically acrossthe same. This receptacle is provided with ancvertlow pipe M, and thispipe maybe used for the purpose of prevent.- ing an overflow from thesaid receptacle in case'the operator fails to obsrvc the influx of milkand regulate it so that the pipe J will notsupply milk faster than itcan escape throught e neck G. This pipe M extends through the wall ofthe holder and I may be arra ged to discharge the milk overflowingthrough it into any suitable receptacle or to convey it back to theholder or the source of supply.

. At times, instead of subjecting the milk to a moderate heat for acomparatively long eriod, it is desirable to subject it to a 'iighertemperature for a shorter period.

Thus, for instance,- it is common practice to subject milk to atemperature of 150 degrees for thirty minutes or to a temperature of 160degrees or more for fifteen minutes, and the period will vary in aninverse ratio of the temperature Within prescribed limits. In the caselast mentioned it is, of course desirable to have the holdcrso arrangedthat the milk entering it will be discharged therefrom after a shorterperiod, and I have therefore provided the branch pipe H about half-Waybetween the bottom of the holder This branch pipe cxand the upperoutlet. tends through the wall of the holder and communicates with theoutside discharge pipe II. It is also controlled by a valve H, so thatit can be closed when the u per outlot is used, and the outerportion othe pipe is made detachable by means of a joint secured by the collar HIn the construction shown in Fig.1 the float is provided with a loop Bbywhich itmay be raised from the bottom of the holder eeann at. the bottomof the holder is provided.

I This consists of'a valve seat F, a plug E the latter secured to thelower end of the valve rod F. The rod extends through a central apertureB in. the float and has a collar In above the said float. W hen thefloat rises to the predetermined point, its

loo 13 comes in contact with the collar F and raises the rod F, thusopening the valve at the bottom of theholder, and when it falls againwiththe fall of the liquid level, the rod is allowed to descend so thatthe outlet valve will be dosed by the pressure of the liquid on theplug. The rod F extends u through the receptacle G, passing througi itsdischarge neck Gr which is centrally lotral position.

cated therein, and, as the rod is thus firmly 1 charge and dischargeniaybe varied-at will by simply moving the collar F on the rod F up anddown, and the said collar is pro.- vided with a set-screw F forthispurpose. A- certain regulation mayalso be accomplished by increasing. ordiminishing the rate of the supply of the milk through the pipe J, andas the outlet pipe has a greater capacity than the inlet pipe it willpermit of a certain increase, above normal in the rate of supply, butthe means of varying the period above described is more satisfactory andreliable, and does not necessarilyinvolve any variation in the rate ofsupply. v

The pipe H is provided at about midheight with a branch pipe H madeintwo sections communicating with the outlet pipe .H and provided with acollar H connecting these two sections. It is also provided with a.valve H by which it may be opened and closed. Through the use of thisvalvecontrolledhranch pipe the liquid may be discharged below the normaloutlet when desired. I

It will be seen from the foregoing description and from theaccompanying. drawings that the apparatus is extremely simple inconstruction, and that it may be dismembored and reassembled with littledifficulty. These features are important, as it is adv s:

able to thoroughly cleanse an apparatus of this character at frequentintervals.

tails of construction herein described, and

illustrated in the drawings, are unimportant and may be varied oromitted without departing from the spirit of the invention.

l/ hat I claim is: i

1. In a device of the chaifacterdescribed,

- outlet to rise an a position at the upper surface-0f the liquid and toreceive theimpact of the liquid .bc-

' fore it reaches. the body of liquid in, the

the combination of a holder for liquid, a conduit adapted to dischargeliquid into the upper part of the holder, an outlet channel adapted topermit the discharge of liquid from the lower part of the holder only,said outlet permitting the escape of liquid from the holder only whenthe level of liquid therein is above the lower part of said holder, andmeans for preventing liquid entering the holder from having verticalmovement. 1

' 2. In a device of the character described, the combination of a holderfor liquid, a conduit adapted to discharge liquid into the upper part ofthe holder, an outlet channel adapted to permit the discharge of liquidfrom the lower part of the holder only, said outlet permitting theescape of liquid from the holder only when the level of liquid thereinis above the lower part of said holder, and means for preventing liquidentering 'the holder from having vertical movement,

the combination of a holder for liquid, a condult adapted to dischargeliquid into the.

upper part of the holder, an outlet channel adapted to permit thedischarge of liquid from the lower part of the holder only, said outletpermitting theescape of liquid from the holder only when the level ofliquid therein is above the lower part of said holder, and means forpreventing liquid'entering the holder from having vertical m'ovement,comprising a horizontal spreader arranged to rise and fallwith andconstantly occupy a position at the upper surface of'the liquid and toreceivetheimpact of the liquid before ,it reaches the body of liquid in.i

the holder, and a receptacle between the discharge end of thesupplyconduit and the spreader adapted to receive liquid from said dischargeend and discharge it upon the spreader, said receptacle being open at;the top. 1 4. in a device of the characterdescribed,

.the combination. of a holder for liquid, a

conduit adapted to discharge liquid into the upper part of the holder,an outlet channel adapted to permit the discharge of liquid from thelower part of the holder onl said ermitting the escape of liqui the hoder only when the level of liquid therein is above the lower partof saidholder, It will be apparent that many of the de' and means forpreventing liquid entering a. horizontal spreader arranged comprisin dfall with and constantly occupy from holder, the diameter of saidspreader being less than the diameter of the holder so as to leave aspace between it and the Walls of 19 from the lower part of the holderonly, said outlet ermitting the escape of liquid from the ho der onlywhen the level of liquid therein is above the lower part of said holder,

and means for preventing liquid entering the holder from having verticalmovement,

comprising a horizontal spreader arranged to rise and fall with andconstantly occupy a position at the upper surface of the liquid and toreceive the impact of the liquid before it reaches the body of liquid inthe holder and a flange; extending fromthe body of said spreader towardthe walls of the holder,

6. In a device of the character described, the combination of a holderfor liquid, a conduit adapted to discharge liquid into the upper art ofthe holder, an outlet channel adapted to permit the discharge of liquidfrom the lower part of the holder only, said outlet ermitting the escapeo f-liquid from the ho der only when the level of liquid therein isabove the lower part of said holder, and means for preventing liquidentering the holderfrom having vertical movement, comprisinga,horizontal spreader'arranged to rise and fall with andeonstantly'occupy a position at the upper surface of the liquid and toreceive the impact of the liquid bep fore it reaches the body of liquidin the holder and a flange extending from the body of said spreadertoward the walls of the holder so located and arranged that it isnormally below the upper surface of the liquid.

7. In a device of the character described. the combination of a holderfor liquid, a conduit adapted to discharge liquid into the upper part ofthe holder, an outlet channel adapted to permit the discharge of liquidfrom the lower part of the holder only, said outlet permitting theescape of liquid from the holder only when the level of liquid thereinis above the lower part of said holder, and means for preventing liquidentering the holder from having vertical movement, con'iprising ahorizontal spreader arranged to rise and fall with and constantly occupya position at the upper surface of the liquid and to receive the impactof the which receives the impact of the liquid.

8. In a device of the character described, the combination of a holderfor liquid, a

conduit adapted to discharge liquid into the u per part of the holder,an outlet channel a apted to permit the discharge of liquid from thelower part of the holder only, said outlet ermitting the escape ofliquid from the ho der only when the level of liquid therein is abovethe lower part of said holder, and means for reventing liquid enteringthe holder from aving vertical movement, comprising a float ada ted torise and fall with the rise and fall 0 liquid in the holder and tointercept the liquid enterin the holder before it reaches the body ofliquid therein and cause itto spread horizontally.

9. In a device of the e' racter described, the combination of a holderfor liquid, a conduit adapted to discharge liquid into the upper part ofthe holder, an outlet channel a apted to permit the discharge of liquidfrom the lower part of the holder onl said outlet erinitting the escapeof liquid from the ho der only when the level of liquid. therein isabove the lower part of said holder, and means for preventing liquid entering the holder from having vertical movement, comprising a floatadapted to rise and fall with the rise and fall of liquid in the holderand to intercept the liquid entering the holder before it reaches thebody of liquid therein and cause it to spread horizontally, a rodextending above and below said float, a valve with which one end of saidrod is connected controlling the outlet of liquid from the holder, anenlar ement on said rod at the upper part of t e holder, theconstruction and arrangement being such that when the float in risingcomes in contact with said enlargement the rod will be moved and causedto open the outlet valve.

10. A. milk holding apparatus, comprising a milk holding vessel arrangedintermediate a pasteurizer and a cooler, a milk receiver arranged in theupper portion of the said milk holding vessel and into which passes themilk from the pasteurizer, the sald receiver discharging into the upperend' of the said vessel, an outlet. leading from the bottom of the saidmilk holding vessel for delivering the milk to the cooler, a'valvecontrolling the said outlet. and a float controlling the said valve andfloating on the milk in the holder. a

11. A milk holding apparatus, compri'sing a milk holding vessel, a milkreceiver in the upper portion of the said vessel and having a bottomoutlet, and a milk spreader floating, on the milk in the said vessel andrising .and falling with the milk in the said vessel and onto the saidmilk spreader passes the nulk from the said nulk' receiver to be spreadby thesaid spreader and delivered to the level of the milk in the saidvessel.v

12. A milk holding apparatus, comprising a milk holding vessel, a milkreceiver in the upper end of the vessel for receiving the milk from apasteurizer and discharging it into the upper end of the vessel, anoutlet leading from the bottom of the vessel, a valve in the saidoutlet, and a float in the vessel and connected with the said valve,

the said float forming a spreader for the;

milk discharged from the said receiver.

13. A milk holding apparatus, comprising a milk holding vessel, a milkreceiver in the upper end of the vessel for receiving the milk from apasteurizer and discharging it into the upper end of the vessel, a

float-controlled outlet the bottom of the vessel for delivering the milkto a cooler, and an overflow leading from the said re ceiver to returnsurplus milk to'the pasteurizer.

fitness my hand this 30th day of June,

1910, at the city of New York, in the county 20 S. J. Cox, ALAN (l.MGDONNELL.

